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Orbital angular momentum

Intertwining with Fourier optics

Nature Photonics volume 19, pages 340–343 (2025)Cite this article

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An angular Fourier optics framework has been established and demonstrated, unlocking unprecedented opportunities for the analysis and manipulation of light waves carrying orbital angular momentum.

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Fig. 1: Illustrations of spatial/temporal Talbot self-imaging phenomena (left) and their angular equivalent ones (right).
Fig. 2: Diffraction- or GVD-based Fourier spectrum analysis and its angular equivalent for OAM mode sorting.

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Authors and Affiliations

  1. Institut National de la Recherche Scientifique – Énergie, Matériaux et Télécommunications (INRS-EMT), Montréal, Québec, Canada

    José Azaña

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  1. José Azaña
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Correspondence to José Azaña.

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The author declares no competing interests.

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Azaña, J. Intertwining with Fourier optics. Nat. Photon. 19, 340–343 (2025). https://doi.org/10.1038/s41566-025-01652-x

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